error in reading 'model.yaml'

[zghn]

Hi,
I run 'python3 main.py -v video/' and the below error occured:

Traceback (most recent call last):
File "main.py", line 140, in
recognizer.read("model.yaml")
cv2.error: OpenCV(4.1.0) /io/opencv/modules/core/src/persistence.cpp:2046: error: (-215:Assertion failed) isMap() in function 'operator[]'

I wana run the code on ubuntu 16.04 and opencv(4.1) and python 3.5.
what's wrong?

thanks

[haolin88]

I have the same problem